What is a 29er? You may be asking. Well, here is what a quick google search will tell you...
29er: Larger diameter mountain bike wheel standard which has actually been around for quite a while but is finally gaining wide-spread acceptance and support. Finally popularized by Gary Fisher with his bike brand, these wheels are taller than the standard 26″ wheels traditionally used. Employing the 700c rim diameter most commonly found on road, touring, and hybrid bicycles; the 29er is promoted as being a more efficient wheel size for rolling over obstacles and maintaining speed and momentum. The down sides are often additional weight and reduced agility.
I absolutely love this bike. Mine was a craigslist bike, but it is still in great shape, made by Redline. I don't have any suspension at all, but the larger wheel size rolls over obstacles easily, and I haven't noticed any need for suspension. I did notice a little of the initial sluggish response that people talk about, but I have long forgotten about that. Also, with the extra set of wheels I bought with slicks on them, this bike it really flies. It is like having a hybrid or commuter bike around as well without taking up more space in the garage.
Here are a few pics from around the web to help demonstrate the difference...
